Andreessen Horowitz

Andreessen Horowitz (a16z)

a16z is a Silicon Valley venture capital firm, founded in 2009 by Marc Andreessen and Ben Horowitz. It invests from seed to growth across AI, infrastructure, apps, fintech, bio and health, crypto and defense/“American Dynamism”, and has a large in-house operating and policy team.

Overview

• Founded: 2009; HQ in the San Francisco Bay Area
• Founders: Marc Andreessen, Ben Horowitz
• General partners (examples, not verified against a primary source): Jeff Jordan, Chris Dixon, Martin Casado, Andrew Chen; Raghu Raghuram (ex-VMware CEO) reportedly joined as a general partner in 2025-10
• Assets under management: about $90B (early 2026, press-reported; not verified against a primary source)
• Website: https://a16z.com/

Funds

• 2026-01-09: raised more than $15Bacrossnewfunds,reportedlyitslargestraiseandover18$6.75B; Apps Fund 2 $1.7B;InfrastructureFund2$1.7B; American Dynamism Fund 2 $1.18B;Bio+HealthcareFund5$0.7B; about $3B for other strategies (press-reported via CNBC/Axios/Bloomberg search summaries; individual figures not cross-checked).
• Earlier: dedicated crypto funds since 2018 and a 2023 American Dynamism fund.

AI relevance

• Reportedly led the roughly $2B seed round of Thinking Machines Lab (2025; press-reported, not verified here).
• Reportedly a backer of Mistral AI and ElevenLabs (not verified here) and, at the developer-tools level, Resend (led its 2024-12 Series A).
• Publishes AI market research, podcasts and policy positions; publicly advocates for light-touch AI regulation.

Criticisms

Critics have raised the firm’s size and influence in deal flow and policy, and possible conflicts between crypto/AI lobbying and investing (not sourced here; follow reputable press for specifics).

Open items

• Reports of 2026 political spending and specific 2026 portfolio events (e.g. defense rounds) were seen only in secondary summaries and are not asserted here.

Sources

• https://www.cnbc.com/2026/01/09/andreessen-horowitz-raises-15-billion-big-in-infrastructure-defense.html, https://www.axios.com/2026/01/09/andreessen-horowitz-15-billion-for-new-funds, https://www.forbes.com/sites/iainmartin/2026/01/09/a16zs-15-billion-fund-vacuumed-up-a-fifth-of-venture-dollars-raised-last-year/ (search results, 2026-10-05; CNBC page returned 403)
• https://en.wikipedia.org/wiki/Andreessen_Horowitz (secondary, fetched 2026-10-05)
• https://resend.com/blog/series-a (fetched 2026-10-05)